Fans of U.S. President Donald Trump stand outside the Kentucky State Fairgrounds as they wait for the president to arrive for a campaign stop in Louisville, Kentucky, March 20, 2017. REUTERS/John Sommers II

Fans of U.S. President Donald Trump stand outside the Kentucky State Fairgrounds as they wait for the president to arrive for a campaign stop in Louisville, Kentucky, March 20, 2017. REUTERS/John Sommers II